[Webkit-unassigned] [Bug 105727] New: Web Inspector: Support inspector file system access with isolated file system through InspectorFrontendHost.

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=105727

           Summary: Web Inspector: Support inspector file system access
                    with isolated file system through
                    InspectorFrontendHost.
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Web Inspector
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: vsevik at chromium.org
                CC: keishi at webkit.org, pmuellr at yahoo.com,
                    pfeldman at chromium.org, yurys at chromium.org,
                    apavlov at chromium.org, loislo at chromium.org,
                    vsevik at chromium.org,
                    web-inspector-bugs at googlegroups.com


Inspector needs file system access to allow developers edit/add sources (even those that are not loaded from server, e.g. deployment descriptors, server scripts).

We plan to use File System API (isolated file system).
FileSystem access request is implemented through InspectorFrontendHost methods and InspectorFrontendAPI callbacks.

InspectorFrontendHost.canAccessFileSystem() - Returns true if file system access is implemented for this embedder.

InspectorFrontendHost.requestFileSystemPermissions() - This method should be called once on inspector start.
InspectorFrontendAPI.fileSystemPermissionsLoaded(fileSystems) - This method is called once isolated file systems are registered, and provides inspector with all necessary information.

void selectFolderAndGrantFileSystemPermission() - Requests embedder to show user select file dialog and register selected dialog as a file system.
InspectorFrontendAPI.fileSystemFolderSelected(errorMessage, fileSystem) - This method is called after user action. 

void revokeFileSystemPermission(in DOMString fileSystemPath) - Requests embedder to revoke registered isolated file system.
InspectorFrontendAPI.fileSystemFolderPermissionsRevoked(fileSystemPath) - revoke callback.

DOMFileSystem isolatedFileSystem(in DOMString fileSystemId, in DOMString registeredName) - Creates javascript DOMFileSystem object.

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